US4139936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making hermetic coaxial cable
Assignee: Raytheon Co
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Filing: 1977-07-05
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Granted: 1979-02-20
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Expires: 1997-07-05
Abstract
Abstract There is described a hermetic coaxial cable particularly adapted to be produced in miniature form and having a completely solid cross section with a solid metal central conductor, a tubular metal outer conductor, and a continuous glass dielectric insulator therebetween.
Inventors
- 👤 Richard L. Abrams
- 👤 Douglas A. Pinnow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:59
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/016; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49123; Y10T29/4998; Y10T29/49982; Y10T29/49986
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
119 words
The method of fabricating coaxial cable having a solid metal central core and a tubular outer conductor and having a continuous glass dielectric insulator therebetween, comprising the steps of: sealing the lower end of a length of glass tubing; providing a preform by disposing within the hollow core of said glass tubing, metal particles having a melting temperature lower than the softening temperature of the glass tubing; providing a metal-filled glass filament by heating said preform in a furnace to melt the metal particles and soften the glass tubing; cooling said metal-filled glass filament to solidify said metal; and depositing a metal coating on said glass filament by passing said soft glass filament down through a metal coating cup.
Claim 2
Independent Claim
119 words
The method of fabricating coaxial cable having a solid metal central core and a tubular outer conductor and having a continuous glass dielectric insulator therebetween, comprising the steps of: sealing the lower end of a length of glass tubing; providing a preform by disposing within the hollow core of said glass tubing, metal particles having a melting temperature lower than the softening temperature of the glass tubing; providing a metal-filled glass filament by heating said preform in a furnace to melt the metal particles and soften the glass tubing; cooling said metal-filled glass filament to solidify said metal; and depositing a metal coating on said glass filament by passing said soft glass filament down through a metal coating cup.
Claim 3
Independent Claim
109 words
The method of fabricating coaxial cable having a solid metal central core and tubular outer conductor and having a continuous glass dielectric insulator therebetween, comprising the steps of: sealing the lower end of a length of glass tubing; providing a preform by disposing within the hollow core of said glass tubing, metal particles having a melting temperature lower than the softening temperature of said glass tubing; providing a metal-filled glass filament by heating said preform in a furnace to melt the metal particles and soften said glass tubing; and depositing a metal coating on said glass filament by passing said soft glass filament down through a metal coating cup.
Claim 4
Independent Claim
109 words
The method of fabricating coaxial cable having a solid metal central core and tubular outer conductor and having a continuous glass dielectric insulator therebetween, comprising the steps of: sealing the lower end of a length of glass tubing; providing a preform by disposing within the hollow core of said glass tubing, metal particles having a melting temperature lower than the softening temperature of said glass tubing; providing a metal-filled glass filament by heating said preform in a furnace to melt the metal particles and soften said glass tubing; and depositing a metal coating on said glass filament by passing said soft glass filament down through a metal coating cup.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-19 | 1982-08-21 | 1983-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-19 | 1986-08-21 | 1987-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-19 | 1990-08-21 | 1991-02-20 | $7700.00 | Window Closed / Lapsed |